You could build a truck that ran on biodiesel, contained biodiesel processing equipment, pulled a biodiesel tank, and also sold coffee. It could drive around collecting grounds until it was full, at which point it would drive to a biodiesel consumer community to sell it all before going on another round.

Custom built coffee ground collection containers could be dropped off at each cafe on an established route.

FTA...

I found an incredibly cool graph illustrating the anticipated future trend of computing, gaming, movies and artificial intelligence. They graph things between Best, Worst and Base Case scenarios, showing a range of just how pleasant or unpleasant things could become. Regardless, it is all inspiring from a technology perspective. Some truly great ideas are listed across the graph; things that I had not previously considered and that the industries affected may not have either. Virtual cinema attendance was one idea that struck me as obvious in retrospect, but predicting the last human produced film and game on such short notice (10 years from now?) is not something that ever occurred to me.

No matter who you are, there is bound to be a few things that spark your interest. I will be using the graph as a repeated inspirational exercise going forward; it's just that cool.